High temperature resistant graded-index polymer optical fiber

Masataka Sato, Miki Hirai, Takaaki Ishigure, Yasuhiro Koike

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


The dopant system graded-index polymer optical fiber (GI POF) for high temperature stability both in bandwidth and attenuation is reported for the first time. We confirmed that the Numerical Aperture (NA) of the GI POF strongly influences the high temperature stability of the GI POF in the attenuation. It was confirmed in this paper that the attenuation increment was mainly induced by the bending loss, since the GI POF drawn by high tension tended to show its length shrinkage, resulting in irregular bending due to the orientation relaxation of polymer chain. We clarified the optimum drawing tension which maintains high mechanical property and minimizes the length shrinkage of the GI POF at high temperature, and the optimum fabrication conditions of the GI POF for high temperature stability both in bandwidth and attenuation.

Original languageEnglish
Pages (from-to)2139-2145
Number of pages7
JournalJournal of Lightwave Technology
Issue number12
Publication statusPublished - 2000 Dec


  • Attenuation
  • Dopant molecules
  • Glass transition temperature
  • Graded index polymer optical fiber
  • Heat-drawing tension
  • High temperature stability
  • Length shrinkage
  • Numerical aperture

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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